DYNAMAT 11905 Hoodliner 32" x 54" x 3/4" Thick Self-Adhesive Sound Deadener – Made in USA

I have an Itasca Reyo motor home, which is a class A that was built by Winnebago on the Mercedes Sprinter chassis. Unlike lots of other Sprinter-based motor homes, on this one Winnebago built the while box and did not leave the van front end and hood. They weren’t focused on sound deadening, so we could hear the diesel engine at times. I found this hoodliner to be easy to install in the tight engine compartment and around braces and obstructions. It is staying in place great, and has reduced the engined and highway noise that we hear as we drive. Exactly what I was looking for.

This is PERFECT for an RV doghouse/engine cover! I saw this mentioned in an RV forum and was about to buy a similar product that was thinner/cheaper but I decided to go with this since the price wasn’t that much difference but the thickness was much better with this product. We have a motor home and the engine cover is between the front seats. It gets VERY warm, especially during the summer months of travel and it’s always noisy, but we mainly really wanted the heart reduction properties. This came in the day of our trip and I decided to try to install it, it was really simple, cutting a piece and sticking it on, then trimming the edges. Our engine cover is an odd custom fiberglass shape, almost like a huge ice scoop. This still confirmed to the curves and edges really easily. It even stuck really well to the existing thin reflective material that was already in place with industrial glue. So the sticky backing is really strong! But most importantly, there is NO HEAT coming from the engine anymore! It’s amazing! I can feel the transition from the base of the engine cover where there is no dynamat, to the engine cover where I installed the dynamat and WOW! I would say there is easily 40° of heat difference at least. There is just zero heat coming from the engine into the cab now. This product is WAY better than I even hoped! I really feel like the engine noise is much better than before too, so that’s an added bonus for us as well! Highly highly recommend this especially for RV owners!

I modified my 2001 Frontier with intake, header, and exhaust and was able to reduce the noise from the rear by installing FatMat (also a great product for the price) in the rear of the vehicle which worked beautifully, but the noise coming from the engine compartment was another issue. It was starting to become unbearable for short highway drives at 70MPH. In comes this hoodliner. The price was right on Amazon ($58 vs $80+ everywhere else), installation was a breeze (ensure the surface is clean prior to application), and the difference was amazing!!!!. I'd recommend this product to anyone that has modded their vehicle's intake system and those whose vehicles did not come or do not have a hoodliner. The only thing negative is that the white lettering flaked off as I was using my hand to apply the liner to the hood. I also need time to assess if the adhesive material maintains its bond to the hood. Only time came tell so expect a followup to this review. Onto the Fatmat: I purchased a roll from them 3 years ago for appox $80 and have covered all 4 doors on my 04 crv's w/ 2 layers, covered my crew cab frontier's: headliner, floor pan, 4 doors w/ 1 layer (I had already lined them with Dynamat which cost me about $100 for one layerof sound deading per two doors, you see the cost difference). behind and under the rear seat w/ 2 layers, and I still have enough material for the doors on my 300 ZX. I do not want to know how much that would have cost me if I would have used Dynamat throughout my vehicles. Dynamat brags that it is thicker than Fatmat and that maybe true, but their door kit goes for $80 and only covers 2 doors ( and that is a front door and the smaller back door and you have to be creative in reusing the leftover material from the front door). For $80 I was able to do the above, allping 2 layers where needed and I still have material left over. Just food for thought!

Instant relief from engine noise and a major reduction in the amount of heat felt thru the hood. Application couldn't have been any easier. I held up the 1-piece sheet to check measurements for the hood of my '85 Jeep CJ-7 and luckily for me it was an almost perfect fit; no trimming was required. I tore off about a 1/3 of the waxy paper backing and fit it tight against the leading edge of the underside of the hood - about an inch back - pushing lightly until it stuck. Then I pulled off the remaining backing and pressed the rest of the liner into place, pushing firmly, inching along until the whole sheet was tacked in. That's it! It looks good and the best thing is that you start getting benefits the second you drop the hood and fire your engine up. I also used this same product on the underside of my ZTR lawn mower deck shields to quiet down pulley & blade whir noise, as well as under the engine hood. Again, a quick easy install with zero issues. That project was done back in 2013 and it's still holding up remarkably well. Dynamat is the real deal and their 1-piece hoodliner is an excellent product. I highly recommend it to anyone looking for simple, efficient reduction of both engine heat & noise. It's also nice to purchase a product that's still made in the USA and actually works as advertised. 5 STARS!

I used this to insulate the engine compartment cover (doghouse) of my 2017 Thor 24.1 class A motorhome. I would estimate it reduced the sound level by 50%, and the heat coming up from the engine compartment by 70%.. I was able to put two layers inside the engine compartment cover itself. Then I used the remaining material to insulate under the radio and to the upright sections by your feet. I cleaned the surfaces with rubbing alcohol before applying the foam. I used a silver Hvac tape to cover the edges of the foam. This upgrade was easily worth the time and money. I will enjoy it for years.

Used this on a 2008 Yamaha AR230 jet boat engine hatch. Cut down the sound from the engine by 60-70%! We can now actually have conversations with the engines running.

I've used Dynamat products before for sound and vibration reduction around door-mounted speakers, so my expectations were high. I used it to line the so-called "doghouse" (i.e., engine cover) of my Class C RV. While it didn't decrease the sound level of the engine as much as I had hoped, it made a huge difference on how hot the doghouse gets while driving. I'm very glad I bought it.

Used for the dog house on my 2021 Class A motorhome on a Ford Chassis. It was easy to install. Online reviews rave about how much a difference it made in reducing noise level. I wanted to see for myself. I used my phone to measure the DB level both before and after install. Each time I drove the same highway, accelerated and drove the same speed and RPMs. I had the phone in the same position, by my head, for both the before and after tests. Let's just say my results were very different. There was...at best.... a mariginal difference. While pressing the gas pedal to the floor to get up to highway speed it was 3 db's quieter. Marginally noticeable at best. But once we hit our intended speed there was virtually no difference. That is because in a Class A Gas motorhome the biggest contributor to the DB level is road noise. Not engine noise. So I would recommend that if you are really serious about reducing the noise in your gas motorhome, go ahead and use this product, but concentrate your efforts at reducing the road noise. So my next